Book/Dissertation / PhD Thesis

FZJ-2023-01020

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Development of components based on Ti2AlC/fiber composites for aggressive environmental conditions

Badie, S. (Corresponding author)FZJ*

2022
Forschungszentrum Jülich GmbH Zetralbibliothek, Verlag Jülich
ISBN: 978-3-95806-680-9

Please use a persistent id in citations: http://hdl.handle.net/2128/33866

Abstract: MAX phases are a promising family of materials with currently more than 150 different compositions, which are based on nanolayered carbides and nitrides. They exhibit unusual properties, bridging the gap between metals and ceramics, as they combine features from both categories. From their metallic aspect, they present good damage tolerance, thermal shock resistance, they are machinable and have high electrical conductivity; while their ceramic-like characteristics translate into high stiffness (high elastic modulus), high melting points (though incongruent), low density and good thermo-mechanical properties at high temperature, such as creep resistance. Additionally, they possess an intermediate coefficient of thermal expansion, a good radiation tolerance, and some of them exhibit excellent oxidation resistance and a selfhealing ability under oxidizing environments. This unique combination of properties is of capital interest for potential high-temperature applications, which involve severe corrosive conditions. MAX phases could serve as structural materials or protective coatings for gas turbines, heat exhausts, nozzles, heating elements, solar receivers in concentrated solar power facilities, but also as fuel cladding in nuclear power plants, catalysts and electrical contacts. However, their transfer to the market as end products has been hindered by different factors, and several aspects still remain unexplored. The presentthesis aims to contribute to this latter point.

Note: Dissertation, RWTH Aachen University, 2022

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 1241 - Gas turbines (POF4-124) (POF4-124)

Appears in the scientific report 2022

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